01 - Preheat oven to 350°F (175°C) and line two baking sheets with parchment paper.
02 - In a medium bowl, whisk flour, baking soda, cinnamon, and salt until thoroughly blended.
03 - Using an electric mixer or whisk, beat softened butter with brown sugar and granulated sugar until the mixture appears light and fluffy, approximately 2 minutes.
04 - Add eggs one at a time, beating well after each. Stir in vanilla extract until evenly mixed.
05 - Gradually add the blended dry ingredients to the creamed mixture, mixing until just combined.
06 - Stir in rolled oats, chopped dates, and nuts until distributed throughout the dough.
07 - Drop tablespoon-sized amounts of dough onto prepared baking sheets, allowing 2 inches between each portion.
08 - Bake for 10 to 12 minutes, or until cookie edges are golden and centers have set.
09 - Remove baking sheets from oven. Let cookies cool for 5 minutes before transferring to a wire rack to cool completely.